Bon Tempe Lake & Dam – Alpine Lake - Bon Tempe Dam loop from San Anselmo

Bike touring routes & trails

Bon Tempe Lake & Dam – Alpine Lake - Bon Tempe Dam loop from San Anselmo

Hard

4.8

(1006)

8,673

riders

Bon Tempe Lake & Dam – Alpine Lake - Bon Tempe Dam loop from San Anselmo

04:30

48.1km

1,020m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: September 30, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

White Hill Open Space Preserve

Loma Alta Open Space Preserve

Waypoints

Start point

Bus stop

Get Directions

1.21 km

San Anselmo-Fairfax Bikeway

Highlight (Segment) • Cycleway

This bikeway offers a better alternative to the much busier Center Boulevard, which does not have a shoulder and an even better route than the Sir Francis Drake Blvd highway. …

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9.41 km

Sky Oaks Road (junction with Shaver Grade Road)

Highlight • Trail

At this point on Sky Oaks Road, there is a junction with Shaver Grade Road, which connects with a dense network of trails and dirt roads near Bald Hill in …

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10.4 km

Bon Tempe Lake & Dam

Highlight • Lake

Wide earthen dam with a great gravel trail crossing. From the top of this dam excellent views of the Bon Tempe Lake, and down across Alpine Lake at a lower elevation.

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10.9 km

Alpine Lake - Bon Tempe Dam

Highlight • Lake

Great stop for a photo

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15.5 km

Pine Mtn Ridge

Highlight • Climb

This ridge is the culmination of the first major climb segment coming from Fairfax. The road then drops to the west to cross Alpine dam, before it climbs the Bolinas ridge.

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30.0 km

Gary Giacomini Open Space Preserve

Nature Reserve

37.6 km

White Hill — Old Railroad Grade upper trailhead, Loma Alta

Highlight • Trail

To avoid the traffic when riding up (or down) White Hill, the highest elevation along Sir Francis Drake Boulevard from Fairfax, the old railroad grade is a more gradual, mostly smooth gravel trail alternative.

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38.5 km

Fairfax Falls 🌊

Highlight • Waterfall

Best appreciated after winter rainfall, this waterfall is right along Old White Hill Grade trail. If surprised by a shower the massive pipe channeling the usually small trickle of water …

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41.2 km